I am using the Slack app on my ArchLinux laptop running KDE Plasma 5.12.4.
Whenever I'm in a call and switch application, desktop or activity the Slack minipanel appears.
Since it appears as a new window it triggers a notification in the Icons-only Task Manager widget which makes the auto-hiding panel appear even though I don't really care about it.
Long story short I don't want the Slack minipanel to appear.
I have found no option to disable it from within the app.
How can I disable this minipanel?